I had unprotected sex and very next day I started feeling itching and lrritstion in my penis with a yellowish discharge.i went to urologist and he gave me some antibiotics and injection.....I completed it but after some days I felt the same stinging and itchy sensation and I changed the urologist....but He also satisfied me that there is no infection after taking urine and blood test....I got satisfied but I kept feeling this itchy,irritated and stinging sensation inside my penis but I ignored.